Honeyfields Mealworm Insect Suet Blocks. Suet blocks are a highly nutritious, energy dense treat, enjoyed all year round treats. Packed with goodness and a firm favourite with most garden birds. CompositionCereals, oils and fats (including ruminant tallow), Seeds, ground peanuts, insects (calclworms (h.illucens) 0.4%), various sugars. AdditivesColourantsFruity flavouringTechnological AdditivesPreservatives